<span>Jet streams are the major means of transport for weather systems. A jet stream is an area of strong winds ranging from 120-250 mph that can be thousands of miles long, a couple of hundred miles across and a few miles deep. Jet streams usually sit at the boundary between the troposphere and the stratosphere at a level called the tropopause. This means most jet streams are about 6-9 miles off the ground. Figure A is a cross section of a jet stream.
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The dynamics of jet streams are actually quite complicated, so this is a very simplified version of what creates jets. The basic idea that drives jet formation is this: a strong horizontal temperature contrast, like the one between the North Pole and the equator, causes a dramatic increase in horizontal wind speed with height. Therefore, a jet stream forms directly over the center of the strongest area of horizontal temperature difference, or the front. As a general rule, a strong front has a jet stream directly above it that is parallel to it. Figure B shows that jet streams are positioned just below the tropopause (the red lines) and above the fronts, in this case, the boundaries between two circulation cells carrying air of different temperatures.
Answer:
This is because an instrument literally does what the operator commanders it that is to say what the operator thinks of is what the instrument does and that's why the English say that a lazy man(operator) blames his tools(instrument)
Answer:
The bonds that exist between their atoms and molecules differ on an atomic scale.
Explanation:
The three basic states of matter are solid, liquid, and gas. The major difference between them is the strength of the bonds that hold their molecules together. This affects the way that the molecules interact with each other.
The intermolecular forces binding solids together are very strong. This makes solids rigid and not able to move about freely, but rather, only able to vibrate about a mean position.
The intermolecular forces binding liquid atoms together are a lot weaker than that of solids. This makes liquids able to flow.
The intermolecular forces binding gas molecules together are the weakest. As a result, the gases can move about freely and occupy no definite volume.
Answer:
Ayn npo!!!!!!!!!!!!!!!!!!!!!!
Explanation:
Whenever there occurs a decrease in the density of a substance then this is known as rarefaction.
For example, when particles of a gas become more dispersed or spread out then it means they have gained more kinetic energy. As a result, there will occur a decrease in mass of the gas and increase in volume of the gas.
As density is mass divided by volume. Hence, decrease in mass will also lead to a decrease in density of the gas.
Therefore, we can conclude that when the molecules in the air become less dense (as in the process of hearing), rarefaction has occurred.
